Apparatus for removing material from centrifugal machines



Julie 25', 1929. 1,718,688

APPARATUS Foa REMOVING MATERIAL FROM CENTRIFUGAL MACHINES E. GMINDER Filed June 15,' 1925 Patented June 25, 1929.

' UNITED STATES EMIL GKINDER, OF I LEUTLINGEN, GERMANY.

APPARATUS FOB BEMOVING MATERIAL FROM CENTRIFUGAL MACHINES.

Application filed June 15, 1925, Serial No. 37,375, and in Germany June 2G, 1924. i

My invention relates to improvements in apparatus for removing material from,c entrifugal machines,`and the ob]ect of the 1mprovements is to provide an apparatus by means of which material, such as loose fibre material, rags of fabrics, knitted material and the like, and waste bast material can be continuously loosened and removed while the centrifugal machine is 1n operatlon. lVith this object in View my invention consists in causing a rotary scratching member to act on the inner surface of the material located within the drum, after the said materlal has been otherwise treated in the centrifugal machine, the said rotary scratching member being moved graduallyfrom the 1nner` part of the drum towards the circumference thereof while the drum is slowly rotated. Thus the material .ismade loose and removed while the scratching member gradually proceeds relatively thereto in radial and circumferential direction, the loosened material being removed from the drum by suitable means such for example asa chute or a conveying tape. In the preferred embodiment the scratching member is in the form of a rotary member provided eircumferentlally with scratchers, pins orV the like, which member 1s passed into a centrifugal drum having a vertical or horizontal axis.

For the purpose of explaining the invention an example embodying the same has been shown in the' accompanying drawing,- in which the same reference characters have been used in all the views to indicate corresponding parts. In said drawing,

Fig. 1, is a sectional elevation showmg a centrifugal machine in a diagrammatical wayand a scratching member disposed within the drum of the said machine, and

Fig. 2, is an elevation looking from the right in Fig. 1.

In the example shown inthe drawing the centrifugal machine consists of a drum t mounted on a horizontal shaft lw and provided with a foraminated wall z, the shaft fw being connected with suitable driving means such as a belt gearing 1'. Within the drum there is a rotary scratching member in the form of adrum d provided circumfertially with pins or spikes m disposed angularly of the radii of the drum. The drum d is mounted on a shaft w mounted on a rockable arm p having its fulcrum on a shaft a 'disposed laterally of the drum t. On an 'arm g of the rockable arm p there is a weighted body g tending to raise the rotary member (Z upwardly and into engagement with the fibre material. On the shaft 'w' a pulley is rotatably mountcdfthe elongated hub of which has the drum (l keyed or otherwise secured thereto. is mounted, which is connected with the pulley 7e by a belt and which is connected with suitable 'driving mea-ns such as abelt gearing 0. Below vthe rotary drum d suitable conveying means are provided. To show what maybe done a conveying tape fis provided.

The operation of the apparatus is as follows: lVhile subjecting the loose material to the centrifugal action for drying or otherwisev trcatingthe same the scratching member m is out of contact with the said material. After thus treating the material the velocity of the drum is slowed down, and the drum d is brought into engagement therewith while slowly rotating the same in the direction of the arrow w. Simultaneously the conveying tape f is set into operation. By the movement of the scratching pins m relatively to the material the said material is loosened and removed from the drum and thrown on the conveying tape f. By the weighted body g' the scratching member is gradually advanced towards the circumference of the drum. Simultaneously the drum tis rotated, so that the whole mass of the material is scratched from the drum and thrown on the conveyer f.

The scratching operation of the rotary member d is based on the relative circumferential movement of the drum d and the fibre material. -I have found that the material is made loose even if the scratching member cl is disconnected from its driving means so as to be carried along by the rotary movement of the drum t, the reason being thatlvvhen the member d rolls on the loose material the ends of the spikes fm, have circumferential movement relatively to the material. When removingthe material the drum t may be rot-ated either to the right or to the left, and the circumferential velocity of the scratching member d may be lesser or greater than that 'of the inner face of the material.

While in describing the invention reference has been made to a particular example embodying the same I wish it to be understood that my invention is not limited to the construction shown in the drawing, and that va- On the shaft a a pulley h rious changes may be made 'in the general arrangement ofthe apparatus and the construction of its parts without departing "from the invention. More particularly I do not limit myself to the rigid supporting means of the drum d. Further I do not limit myself to the 'construction ofthe meansfor. removing the character of the operation which is performed on the material prior to or in connection with the collecting of the material on the innerV surface 'of the centrifugal drum.

I claim:

1. The combination, withV a centrifugal machine, of a rotary scratching member adapted for engagement with the inner face of the material treated within said machine, and means to impart relative movement to said scratching member and drum circumferentially of the latter, and means controlled by the amount Vof material within the drum for automatically varying the position of said member radially of said drum.

2. The combination, with a centrifugal machine, of a rotary scratching member adapted for engagement with the inner face of the material treated within said machine, a rocker carrying said rotary member and adapted to be rocked with said scratching member radially of the drum of the machine, and a'belt gearing for driving said scratching member comprlsing pulleys mounted respectively coaxially of the scratching member and coaxially of the fulcrum of said rocker. l

f y3. The combination, lwith a centrifugal machine, of a rotary scratching member adapted for engagement with the inner face of the material treated within said machine, means to impart relative movement radially and circumferentially of the drum of the machine to said scratching member and drum, and means to remove the material made loose by said scratching member. i

4. The combination with the drum of a centrifugal machine, having a substantially 1,71s,esa

horizontal axis of rotation, of a rotary member disposed within said drum and ada ted for engagement with the inner surface o the material to be treated and means for automatically moving said rotary member in a substantially radial direction in respect to the drum, during the operation of said member.

5. In combination a rotary centrifugal drum for dr ing material and means for removing the ried material, including a rotary member Withinthe drum supporting means permitting movement of said member in a substantially radial directionwithin said druln and means for automatically moving said member toward the periphery of the drum as the thickness of the material within the drum decreases.

6. In combination, a rotary drum adapted to be rotated at high speed for separating liquid and solid material, a rotary member within said drum having cutting parts adapted to engage with the material and loosen the latter during slower speed of drum rotation, and means for moving said member radiall of the drum as the thickness of the layer o unremoved solid material in the drum decreases.

7. An apparatus for removing material from a centrifugal drum, including an arm pivoted intermediate of its ends and having one end adapted to project into the -drum, a roller-shaped tool having rojections on the periphery thereof, carried y said arm on the last mentioned end, a counter weight on the opposite end of said arm, a belt pulley coaxial with the pivotal support of said arm, a. second belt pulley secured to said pulley, and a belt for driving the second mentioned pulley from the first mentioned one.

8. The combinationwith a centrifugal drum of a pivoted member supported outside of said drum and having one end extending into the latter, a roller-shaped tool carried by the last mentioned end of said member and disposed withnsaid drum with its axis substantially parallel to the axis of the drum, a. counter weight on the outer end of said member, a pulley coaxial with the pivotal support of said member, and means for rotating said tool from said pulley.

In testimony whereof I hereunto ax my signature.

EMIL GMINDER. 

